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Forming method for different-plane pi-type carbon fiber composite joint

A composite material and molding method technology, which is applied in the field of manufacturing process of dissimilar π-type carbon fiber composite material joints, can solve the problems of voids, uneven pressure, influence on performance and accuracy, etc. range effect

Inactive Publication Date: 2018-01-09
HENGSHEN
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a manufacturing process for different-plane π-shaped carbon fiber composite material joints, which can realize the production of carbon fiber composite material π-shaped parts with a small opening width, and solve the problem of traditional manual laying during the production process of π-shaped parts. The limitation of the layer causes problems such as bridging in the corner area, uneven thickness, and uneven pressure, resulting in defects such as rich resin and delamination, voids, and looseness after curing, which seriously affects its performance and accuracy.

Method used

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  • Forming method for different-plane pi-type carbon fiber composite joint
  • Forming method for different-plane pi-type carbon fiber composite joint
  • Forming method for different-plane pi-type carbon fiber composite joint

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Embodiment Construction

[0019] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] Figure 1, figure 2 As shown, this embodiment provides a manufacturing process for different-plane π-shaped carbon fiber composite joints, laying carbon fiber prepregs on L-shaped, U-shaped and convex molds; Heat pre-compacting separately with the convex shape; assemble the shaped L-shaped and U-shaped prepregs with the convex mold; after pre-compacting, lay auxiliary materials.

[0021] Such as Figure 4 As shown, on the composite mold 101, the lay-up layer 107, the release cloth 103, the isolation film 106, the air felt 104, and the auxiliary materials of the vacuum bag 105 are sequentially placed, and a sealing strip 102 is arranged between the vacuum bag and the mould. Vacuumize the vacuum bag, heat at 180°C, and apply 6bar pressure to cure and form to obtain a different-plane π-shaped carbon fiber composite joint.

[0022] A di...

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Abstract

The invention provides a forming method for a different-plane pi-type carbon fiber composite joint. According to the forming method, four core blocks are laid and attached according to the lay-up design in the form of two kinds of L type, one U type and one inverted-T type; the four core blocks are subjected to heat pre-pressing; and after integrated assembly and pre-pressing, an auxiliary material is laid, curing forming is conducted under a certain temperature and pressure, and a pi-type product is formed. By the adoption of the process, the problem that lay-up of pi-type products with smallopening widths cannot be achieved is solved, the problem about manufacturing of complex pi-type products by the carbon fiber composite is solved, the coefficient of the difficulty of all the links islowered, and the flatness of the inner surface and the outer surface of the composite product is guaranteed. The forming method provides a new idea for manufacturing of the pi-type carbon fiber composite structural piece.

Description

technical field [0001] The invention relates to a manufacturing process of a different-plane π-type carbon fiber composite material joint. Background technique [0002] With the rapid development of modern technology, higher requirements are put forward for carbon fiber materials. Structural parts made of carbon fiber composite materials have the characteristics of high strength, high modulus and light weight and have good application prospects. The existing π-shaped parts mainly use metal materials, which have the disadvantages of heavy weight, poor corrosion resistance, and short service life. Carbon fiber composite materials have the characteristics of high specific strength and specific modulus, excellent mechanical properties of parts, high safety, designability and integrated molding of parts, etc., and are widely used in various fields, fully meeting the requirements of high assembly precision. However, due to the fact that carbon fiber composite materials cannot be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34
Inventor 魏强强商莉王林臣董淑强赵宏飞
Owner HENGSHEN
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